Comments

Comment by Kanariya

Grants 30% resistance to forced movement effects. This essentially means a 30% chance for a forced movement effect (grip, knockback, etc) to miss and have no effect on you.

Note that this may change before 8.2 launches, specifically as Blizzard has replaced previous resistances to loss of control effects (such as Unbreakable Will, Unyielding Faith) with duration reductions instead.

Comment by ShadeolTheFox

From personal testing, this only reduces the strength of continuous push/pull effects that you usually have to run against (like Inevitable End on King Rastakhan). Testing done against player CCs (I tried stuns, knockbacks, roots) had no effect.

I tested this against the Blade Lord Ta'yak, the second boss in Heart of Fear. When he hits sub-20%, he casts Storm Unleashed which fills the sides of the room with very harsh winds that are intended to push you away from the boss if you try to leave the center.

With the punchcard, I was just barely being pushed back by the winds.

Without the punchcard, I needed about 50% bonus movespeed to be moving at the same pace as I was with the punchcard.

Considering this drops from King Mechagon himself, it's probably intended to help you deal with his Magneto-Arm ability in Phase 2.

EDIT: Tested this against the electric pushback on Blackwater Behemoth. With the punchcard, the push was barely even noticeable. I just had to inch forward every 1-2 seconds instead of actively having to keep swimming against it.